# 034SPI vs LYN User

The clearest difference is rating: LYN User at 5.0 against 034SPI's 4.2. 034SPI's advantage is ratings volume (43 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LYN User holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: 034SPI has 43 ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 034SPI | LYN User |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (43 ratings)](https://appshunter.io/ios/app/034spi/id6468930588/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lyn-user/id6763368076/reviews)** |
| Number of ratings | **43** | 2 |
| Positive reviews | 55.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 126 MB | 93 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [034Motorsport](https://appshunter.io/developer/1699254218) | [Love Your Neighbor Inc.](https://appshunter.io/developer/1670048118) |

## What reviewers say

### 034SPI

[App page](https://appshunter.io/ios/app/034spi/id6468930588)

This app allows users to flash their car's ECU/TCU tunes, configure live data displays, and record data logs for analysis. It also provides diagnostic support tools like reading and clearing DTC codes.

**Highlights:** Flash ECU/TCU tunes, Configure live data displays, High-speed data logging, Upload logs to server, Read and clear DTCs, View emissions monitor status

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### LYN User

[App page](https://appshunter.io/ios/app/lyn-user/id6763368076)

Find and hire trusted local home service professionals. Browse provider profiles, request quotes, schedule services, and track your requests from start to finish. Secure in-app payments are available.

**Highlights:** Search local contractors by service type, Browse provider profiles with reviews, Request quotes and schedule services, Track service requests, Secure in-app payments, Save favorite providers

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 034SPI free?

034SPI is free to download, with no in-app purchases.

### Is LYN User free?

LYN User is free to download, with no in-app purchases.

### Which has better reviews, 034SPI or LYN User?

LYN User is rated higher. 034SPI averages 4.2 out of 5 from 43 ratings, while LYN User averages 5.0 from 2 ratings.

### Do 034SPI or LYN User have ads?

Neither 034SPI nor LYN User shows ads.

### Which is updated more often, 034SPI or LYN User?

034SPI ships an update every 3 weeks, and LYN User every 3 weeks. Most recently, 034SPI was updated on October 30, 2026 and LYN User on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*